... carbon steel 2.Surface:polished;galvanized 3.Good price and quality Detailed Product DescriptionMetal stamping part/Fastener:Stainless Steel ... 1/4",3/8",5/16",1/2",M6,M8,M10,M12);4.Competitive price and good quality;5.OEM service available; ... We hope to receive drawings or physical samples from you and we ... nut(M6,M8,M10,M12,1/4",3/8",1/2",5/16")